MVCHelper

Mix this trait into a class to provide support for
MVC style coding. Each controller line is defined as:

serve {
case "user" :: User(user) :: _ => "#name" #> user.firstName
}

The above code matches /user/4, loads the user with primary
key 4 from the database, then applies the transform to the /user.html
template replacing the node with the id "name" with the firstName of
the user

A trait that holds a response for the MVCHelper. Conversions
exist from Unit (just serve the template),
CssBindFunc (do the substitution on the template),
NodeSeq (run the template),
LiftResponse (send the response back),
or Box or Option of any of the above.